School Savers - Vernier NH4-BTA Ammonium Ion-Selective Electrode

Vernier NH4-BTA Ammonium Ion-Selective Electrode

Use the Ammonium ISE to measure levels of ammonium ions introduced from fertilizers. It can also indicate aqueous ammonia levels if sample solutions are acidified to convert NH3 to NH4+.

The Ammonium ISE has a combination-style, non-refillable, gel-filled electrode. Like all other PVC ISE membranes, the membrane on the ISE has a limited life expectancy. However, the replaceable module of ISE allows you to simply discard the used membrane module, and replace it with a new one.
Note: We recommend that you do not purchase ISE replacement modules too far in advance of their expected time of use as degradation occurs while they are stored on the shelf.
Important: Ion-Selective Electrodes require good chemical technique and careful calibration to obtain accurate results; they are not recommended for middle school or elementary students.

Specifications
Range: 0.10 to 18,000 mg/L or ppm (5.5 × 10-6 M to 1.0 M)
Resolution (LabQuest 2, LabQuest, LabQuest Mini, Go!Link, LabPro):
% of reading: 0.7%
Low scale reading: 1.8 ±0.013
High scale reading: 35,500 ±250 mg/L
pH Range: 4 to 7.5
Interfering Ions: K+
Electrode Slope (log voltage vs. concentration): +56 mV/decade
Electrode Resistance: 1 to 4 MO
Reproducibility: ± 5% of reading
Temperature range (can be placed in): 0 to 50°C (no temperature compensation)
Minimum immersion: 1 inch
Electrode Length: 155 mm
Body Diameter: 12 mm
Cap Diameter: 16 mm
Cable Length: 100 cm

What’s Included
Vernier Ammonium Ion-Selective Electrode
30 mL bottle of Ammonium Low Standard (1 mg/L)
30 mL bottle of Ammonium High Standard (100 mg/L)
Short-term ISE soaking bottle
User manual

The Ammonium Ion-Selective Electrode requires a compatible interface and software to collect data. Interface and software sold separately.

The Ammonium Ion-Selective Electrode is compatible with these interfaces:
LabQuest 2
LabQuest
LabQuest Mini
Go!Link
SensorDAQ
Vernier LabPro
Vernier EasyLink
CBL 2
TI-Nspire Lab Cradle